AdenosineCoronary VesselsCoronary AngiographyReceptor, Adenosine A2ACoronary Artery DiseaseReceptor, Adenosine A1Coronary CirculationPurinergic P1 Receptor AgonistsAdenosine A2 Receptor AgonistsAdenosine A1 Receptor AgonistsAngioplasty, Balloon, CoronaryReceptor, Adenosine A3Adenosine DeaminaseCoronary StenosisReceptor, Adenosine A2BCoronary Artery BypassReceptors, Purinergic P1Receptors, Adenosine A2Adenosine KinaseAdenosine A2 Receptor AntagonistsCoronary DiseaseAdenosine A1 Receptor AntagonistsSerotonin Receptor AgonistsDopamine AgonistsPurinergic P1 Receptor AntagonistsSerotonin 5-HT1 Receptor AgonistsXanthinesCoronary VasospasmAdenosine A3 Receptor AgonistsSerotonin 5-HT2 Receptor AgonistsAdenosine-5'-(N-ethylcarboxamide)Dose-Response Relationship, DrugPhenethylaminesCoronary AneurysmCoronary ThrombosisMyocardial InfarctionAdenosine MonophosphateGABA AgonistsRats, Sprague-DawleyGABA-A Receptor AgonistsReceptors, PurinergicCoronary RestenosisGABA-B Receptor AgonistsPurinergic P2 Receptor AgonistsCannabinoid Receptor AgonistsSerotonin 5-HT4 Receptor AgonistsTime FactorsCoronary OcclusionCyclic AMPTheophylline2-ChloroadenosineAdrenergic alpha-2 Receptor AgonistsPhenylisopropyladenosinePercutaneous Coronary InterventionAdenosine A3 Receptor AntagonistsVasodilator AgentsDogsRats, WistarReceptors, Opioid, kappaHistamine AgonistsMuscarinic AgonistsRisk FactorsCoronary Care UnitsMyocardial IschemiaVasodilationDipyridamoleTreatment OutcomeSerotonin AntagonistsReceptors, Opioid, muMyocardiumCells, CulturedReceptors, Dopamine D2HeartElectrocardiographyAdrenergic AgonistsCalcium2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepineHemodynamicsRadioligand AssayBaclofenGuinea PigsAdrenergic beta-3 Receptor Agonists5'-NucleotidasePiperidinesProspective StudiesAdrenergic beta-AgonistsStentsQuinpiroleReceptors, Opioid, deltaNicotinic AgonistsInosineReceptors, Dopamine D1BenzazepinesExcitatory Amino Acid AgonistsFollow-Up StudiesSwineSerotoninAdrenergic alpha-AgonistsBlood PressureEndothelium, Vascular